The Wireless Trackball Keyboard from SolidTek is a super-compact wireless keyboard with built-in trackball and buttons, featuring smaller than normal-sized keys. Ideal for use with portable devices, this keyboard can use alkaline batteries or rechargeable batteries and/or mini-USB cable. There is an embedded numeric keypad also.
NOTE: If you are using the mini-USB cable to power the keyboard, DO NOT USE the alkaline batteries at the same time, as the keyboard will ATTEMPT TO CHARGE THE BATTERIES. Use rechargeable batteries instead, or no batteries.